Research is being conducted on the in vitro activity of fosfomycin in combination with other antibiotics, such as linezolid, against various drug-resistant bacteria, including methicillin-resistant Staphylococcus aureus. The effectiveness of these combinations is being explored in different studies, with some focusing on specific bacteria like vancomycin-resistant Enterococcus faecium and carbapenem-resistant Pseudomonas aeruginosa. The goal of these studies appears to be finding synergistic combinations that can overcome drug resistance in various pathogens.